1/*
2 * Copyright (C) 2015 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
14 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
15 * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
17 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
18 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
19 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
20 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
21 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
22 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
23 * THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26#pragma once
27
28#if ENABLE(CONTENT_EXTENSIONS)
29
30namespace WebCore {
31
32namespace ContentExtensions {
33
34template <typename CharacterType, typename DataType>
35class MutableRange {
36 typedef MutableRange<CharacterType, DataType> TypedMutableRange;
37public:
38 MutableRange(uint32_t nextRangeIndex, CharacterType first, CharacterType last)
39 : nextRangeIndex(nextRangeIndex)
40 , first(first)
41 , last(last)
42 {
43 ASSERT(first <= last);
44 }
45
46 MutableRange(const DataType& data, uint32_t nextRangeIndex, CharacterType first, CharacterType last)
47 : data(data)
48 , nextRangeIndex(nextRangeIndex)
49 , first(first)
50 , last(last)
51 {
52 ASSERT(first <= last);
53 }
54
55 MutableRange(DataType&& data, uint32_t nextRangeIndex, CharacterType first, CharacterType last)
56 : data(WTFMove(data))
57 , nextRangeIndex(nextRangeIndex)
58 , first(first)
59 , last(last)
60 {
61 ASSERT(first <= last);
62 }
63
64 MutableRange(MutableRange&& other)
65 : data(WTFMove(other.data))
66 , nextRangeIndex(other.nextRangeIndex)
67 , first(other.first)
68 , last(other.last)
69 {
70 ASSERT(first <= last);
71 }
72
73 TypedMutableRange& operator=(TypedMutableRange&& other)
74 {
75 data = WTFMove(other.data);
76 nextRangeIndex = WTFMove(other.nextRangeIndex);
77 first = WTFMove(other.first);
78 last = WTFMove(other.last);
79 return *this;
80 }
81
82 DataType data;
83
84 // We use a funny convention: if there are no nextRange, the nextRangeIndex is zero.
85 // This is faster to check than a special value in many cases.
86 // We can use zero because ranges can only form a chain, and the first range is always zero by convention.
87 // When we insert something in from of the first range, we swap the values.
88 uint32_t nextRangeIndex;
89 CharacterType first;
90 CharacterType last;
91};
92
93} // namespace ContentExtensions
94} // namespace WebCore
95
96#endif // ENABLE(CONTENT_EXTENSIONS)
97